infuscate

in·fus·cate

darkened or tinged with brown: said as of the wings of an insect

also in·fus′cat·ed

Origin of infuscate

Classical Latin infuscatus, past participle of infuscare, to make dark, obscure ; from in-, in + fuscare, to darken ; from fuscus, dark ; from Indo-European base an unverified form dhus-: see obfuscate